The Boston Globe editorial board has endorsed U.S. Rep. Edward Markey in the Democratic primary for U.S. Senate and State Rep. Daniel Winslow in the Republican contest.

The liberal-leaning editorial board chose Markey in its Sunday editorial. The Globe called Markey “a happy warrior, eager to join with Republicans on matters of national importance.”

The paper criticized Markey’s Democratic opponent, U.S. Rep. Stephen Lynch, for voting against Democratic President Barack Obama’s health care reform. It praised Markey for his work on telecommunications and energy policy. “The achievement gap between Markey and Lynch is vast,” the Globe wrote.

On Monday, the Globe endorsed Winslow, who is running against former U.S. Attorney Michael Sullivan and private equity investor Gabriel Gomez. The Globe portrayed Sullivan as an “experienced party loyalist who is way too conservative for the general electorate” and Gomez as the type of fresh-faced newcomer for whom “the first slip-up usually spells doom.”

The paper called Winlsow “both highly qualified and innovative, one of the best-rounded candidates to emerge in either party.”